Thanks! All of this is very valid criticism and stuff that's up there on my todo list :)
Re using the system to jump around a larger space, this is something I already pondered and it's definitely something to explore. For now I'm comfortable within this constricted 5x5 space both scope- and mechanics-wise, and feel like there's a lot of design juice to be squeezed out of it, and the restriction is more helpful than harmful. Surely an idea to revisit in the future, though.